Meet Oxygen! A Little Air Traveller is a STEM storybook and science story book for kids created for curious children who love asking questions about the world around them. This chemistry story book for kids follows oxygen as it travels through the natural world, helping young readers understand what oxygen is and why it matters. Through simple storytelling and rhythmic language, children learn where oxygen comes from through photosynthesis, how it moves through the air, and how it helps our bodies breathe and grow. As the story unfolds, oxygen meets its favorite “friends” to form water, helps fires shine brightly, and even explains everyday changes like why metal rusts. These ideas are introduced gently and visually, making complex science feel familiar and approachable. Designed as a read-aloud for families, classrooms, and homeschool settings, this STEM story book about science supports learning from preschool through kindergarten and the early elementary years . Ideal for ages 3–7 , this chemistry story book for toddlers and young children turns chemistry into a story children can understand, remember, and enjoy—long before formal science instruction begins.